—Henry,________the light is ________when you leave the lab.
—All right.
A.be sure;turned on |
B.make sure;turned off |
C.sure;turning off |
D.make sure;turning off |
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—Henry,________the light is ________when you leave the lab.
—All right.
A.be sure;turned on |
B.make sure;turned off |
C.sure;turning off |
D.make sure;turning off |